package com.zzgele.qmzb.api.web;//package com.zzgele.qmzb.api.web;
//
//import com.aliyun.oss.common.utils.BinaryUtil;
//import org.apache.commons.lang3.StringUtils;
//import org.apache.http.HttpResponse;
//import org.apache.http.client.methods.HttpGet;
//import org.apache.http.impl.client.DefaultHttpClient;
//
//import javax.servlet.ServletException;
//import javax.servlet.annotation.WebServlet;
//import javax.servlet.http.HttpServlet;
//import javax.servlet.http.HttpServletRequest;
//import javax.servlet.http.HttpServletResponse;
//import java.io.BufferedReader;
//import java.io.IOException;
//import java.io.InputStream;
//import java.io.InputStreamReader;
//import java.net.URI;
//import java.security.KeyFactory;
//import java.security.PublicKey;
//import java.security.spec.X509EncodedKeySpec;
//
/////import com.aliyun.oss.OSSClient;
////import com.aliyun.oss.common.utils.BinaryUtil;
////import org.apache.commons.codec.binary.Base64;
//
//
////import com.aliyun.oss.common.utils.BinaryUtil;
//
//@WebServlet(urlPatterns="/public/oss/callback")
//public class CallbackServer extends HttpServlet {
//	/**
//	 *
//	 */
//	private static final long serialVersionUID = 5522372203700422672L;
//
//	protected void doGet(HttpServletRequest request, HttpServletResponse response)
//			throws ServletException, IOException {
//		System.out.println("用户输入url:" + request.getRequestURI());
//		response(request, response, "input get ", 200);
//
//	}
//
//	@SuppressWarnings({ "finally" })
//	public String executeGet(String url) {
//		BufferedReader in = null;
//
//		String content = null;
//		try {
//			// 定义HttpClient
//			@SuppressWarnings("resource")
//            DefaultHttpClient client = new DefaultHttpClient();
//			// 实例化HTTP方法
//			HttpGet request = new HttpGet();
//			request.setURI(new URI(url));
//			HttpResponse response = client.execute(request);
//
//			in = new BufferedReader(new InputStreamReader(response.getEntity().getContent()));
//			StringBuffer sb = new StringBuffer("");
//			String line = "";
//			String NL = System.getProperty("line.separator");
//			while ((line = in.readLine()) != null) {
//				sb.append(line + NL);
//			}
//			in.close();
//			content = sb.toString();
//		} catch (Exception e) {
//		} finally {
//			if (in != null) {
//				try {
//					in.close();// 最后要关闭BufferedReader
//				} catch (Exception e) {
//					e.printStackTrace();
//				}
//			}
//			return content;
//		}
//	}
//
//	public String GetPostBody(InputStream is, int contentLen) {
//		if (contentLen > 0) {
//			int readLen = 0;
//			int readLengthThisTime = 0;
//			byte[] message = new byte[contentLen];
//			try {
//				while (readLen != contentLen) {
//					readLengthThisTime = is.read(message, readLen, contentLen - readLen);
//					if (readLengthThisTime == -1) {// Should not happen.
//						break;
//					}
//					readLen += readLengthThisTime;
//				}
//				return new String(message);
//			} catch (IOException e) {
//			}
//		}
//		return "";
//	}
//
//
//	protected boolean VerifyOSSCallbackRequest(HttpServletRequest request, String ossCallbackBody) throws NumberFormatException, IOException
//	{
//		boolean ret = false;
//		String autorizationInput = new String(request.getHeader("Authorization"));
//		String pubKeyInput = request.getHeader("x-oss-pub-key-url");
//		byte[] authorization = BinaryUtil.fromBase64String(autorizationInput);
//		byte[] pubKey = BinaryUtil.fromBase64String(pubKeyInput);
//		String pubKeyAddr = new String(pubKey);
//		if (!pubKeyAddr.startsWith("http://gosspublic.alicdn.com/") && !pubKeyAddr.startsWith("https://gosspublic.alicdn.com/"))
//		{
//			System.out.println("pub key addr must be oss addrss");
//			return false;
//		}
//		String retString = executeGet(pubKeyAddr);
//		retString = retString.replace("-----BEGIN PUBLIC KEY-----", "");
//		retString = retString.replace("-----END PUBLIC KEY-----", "");
//		String queryString = request.getQueryString();
//		String uri = request.getRequestURI();
//		String decodeUri = java.net.URLDecoder.decode(uri, "UTF-8");
//		String authStr = decodeUri;
//		if (queryString != null && !queryString.equals("")) {
//			authStr += "?" + queryString;
//		}
//		authStr += "\n" + ossCallbackBody;
//		ret = doCheck(authStr, authorization, retString);
//		return ret;
//	}
//
//	protected void doPost(HttpServletRequest request, HttpServletResponse response)
//			throws ServletException, IOException {
//		String ossCallbackBody = GetPostBody(request.getInputStream(), Integer.parseInt(request.getHeader("content-length")));
//		byte[] encodedKey = BinaryUtil.fromBase64String(ossCallbackBody);
//		 String s= new String(encodedKey);
//		boolean ret = VerifyOSSCallbackRequest(request, ossCallbackBody);
//		System.out.println("verify result:" + ret);
//		System.out.println("OSS Callback Body:" + ossCallbackBody);
//		if (ret)
//		{
//			response(request, response, "{\"Status\":\"OK\"}", HttpServletResponse.SC_OK);
//		}
//		else
//		{
//			response(request, response, "{\"Status\":\"verdify not ok\"}", HttpServletResponse.SC_BAD_REQUEST);
//		}
//	}
//
//	public static boolean doCheck(String content, byte[] sign, String publicKey) {
//		try {
//			KeyFactory keyFactory = KeyFactory.getInstance("RSA");
//			byte[] encodedKey = BinaryUtil.fromBase64String(publicKey);
//			PublicKey pubKey = keyFactory.generatePublic(new X509EncodedKeySpec(encodedKey));
//			java.security.Signature signature = java.security.Signature.getInstance("MD5withRSA");
//			signature.initVerify(pubKey);
//			signature.update(content.getBytes());
//			boolean bverify = signature.verify(sign);
//			return bverify;
//
//		} catch (Exception e) {
//			e.printStackTrace();
//		}
//
//		return false;
//	}
//
//	private void response(HttpServletRequest request, HttpServletResponse response, String results, int status) throws IOException {
//		String callbackFunName = request.getParameter("callback");
//		response.addHeader("Content-Length", String.valueOf(results.length()));
//		if (callbackFunName == null || callbackFunName.equalsIgnoreCase(""))
//			response.getWriter().println(results);
//		else
//			response.getWriter().println(callbackFunName + "( " + results + " )");
//		response.setStatus(status);
//		response.flushBuffer();
//	}
//}
